Air conditioner metal plate inner hole grinding device

Abstract

The invention belongs to the technical field of air conditioner metal plate machining, and particularly relates to an air conditioner metal plate inner hole grinding device which comprises a base, a workbench and a rack, the workbench and the rack are arranged above the base, the workbench is fixedly arranged at the top of the base, the rack is fixedly arranged on the upper surface of the workbench, and a PLC is fixedly installed on the side wall of the rack; a grinding air cylinder is fixedly mounted at the top of the rack, a grinding motor is fixedly mounted at the moving end of the grinding air cylinder, and a grinding rod is fixedly mounted at the output end of the grinding motor. The device has the function of automatically detecting the roughness of the surface of the inner hole of the compressor support and the function of restraining the vibration amplitude of the grinding rod, meanwhile, the power of the grinding motor and the vibration reduction force on the grinding rod are automatically adjusted according to the roughness, the grinding precision is improved, unnecessary energy consumption is reduced, and in addition, the grinding efficiency is improved. The use degree of the grinding rod can be detected, the temperature around an inner hole of the compressor support can be reduced, and the use effect is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of air conditioner sheet metal processing, and in particular relates to an air conditioner sheet metal inner hole grinding device. Background Art

[0002] The existing air-conditioning compressor bracket is generally an inverted "J"-shaped sheet metal part, and an assembly hole is provided in the middle of the compressor bracket. When installing the air-conditioning compressor, the assembly hole in the middle of the compressor bracket can be used as a reference point for installation positioning. The installer can accurately place the compressor on the bracket through the assembly hole. At present, after the compressor bracket is formed, the internal edge of the assembly hole often produces burrs and sharp edges, so it needs to be polished to improve the efficiency and accuracy of the installation. For example, patent announcement number: CN117532420A discloses a polishing device for processing air-conditioning accessories.

[0003] At present, a grinding head tool is required for grinding the assembly holes of the compressor bracket. Since the grinding head is driven by a motor to rotate at high speed during operation, and since the grinding head has a certain length, one end of the grinding head is fixed on the output end of the motor, and the other end is not fixed, it will be affected by an unbalanced force during rotation, which will cause the grinding head to generate rotational vibration, and the grinding diameter of the inner hole cannot be accurately controlled, resulting in excessive grinding of the inner hole size and reduced inner hole accuracy, which will cause the compressor and the bracket to be installed loosely, shake, or even fall off, affecting the normal operation and safety of the compressor. Summary of the invention

[0004] The purpose of the present invention is to provide an air conditioner sheet metal inner hole grinding device in view of the above problems.

[0005] To achieve the above object, the present invention adopts the following technical scheme: an air conditioner sheet metal inner hole grinding device, comprising a base, a workbench and a frame arranged above the base, the workbench is fixedly arranged on the top of the base, the frame is fixedly arranged on the upper surface of the workbench, a PLC controller is fixedly installed on the side wall of the frame, a grinding cylinder is fixedly installed on the top of the frame, a grinding motor is fixedly installed on the moving end of the grinding cylinder, a grinding rod is fixedly installed on the output end of the grinding motor, and also includes: A bracket support is fixedly connected to the upper surface of the workbench, a clamping frame is symmetrically fixedly arranged on the upper surface of the workbench, a clamping cylinder is fixedly installed on the top of the clamping frame, and a bracket clamping plate is fixedly arranged on the movable end of the clamping cylinder; A hollow vibration-absorbing rod is fixedly connected to the lower end of the grinding rod, and an inner hole roughness detection mechanism is provided inside the hollow vibration-absorbing rod, and the inner hole roughness detection mechanism can detect the roughness of the inner hole and control the operation of the grinding motor through a PLC controller; An elastic telescopic rod, the surface of the bracket support, the surface of the workbench and the surface of the bracket clamping plate are all provided with corresponding retreat holes, the elastic telescopic rod is arranged inside the retreat hole, a rotating shaft is fixedly provided at the lower end of the elastic telescopic rod, and the lower end of the rotating shaft is rotatably connected to the top of the base, and a rotating disk is fixedly provided on the shaft wall of the rotating shaft; A vibration-absorbing mechanism is fixedly connected to the upper end of the elastic telescopic rod, and the vibration-absorbing mechanism is used in conjunction with the lower end of the hollow vibration-absorbing rod; A wear detection mechanism is provided between the shaft wall of the rotating shaft and the top of the base, and is used to detect the wear degree of the grinding rod; A positioning mechanism, disposed between the shaft wall of the rotating shaft and the top of the base, for positioning and fixing the rotating shaft; The cooling mechanism is arranged inside the bracket support and inside the bracket clamping plate, and is located outside the retreat hole; The trigger switch mechanism is arranged between the elastic telescopic rod and the vibration elimination mechanism, and is used to control the operation of the grinding motor, the inner hole roughness detection mechanism and the cooling mechanism; The polishing cylinder, the polishing motor, the clamping cylinder, the inner hole roughness detection mechanism, the wear detection mechanism, the positioning mechanism, the cooling mechanism and the trigger switch mechanism are all connected to the PLC controller by electrical signals.

[0006] In the above-mentioned air-conditioning sheet metal inner hole grinding device, the inner hole roughness detection mechanism includes a battery, a photoelectric detector and a roughness detection light source arranged inside a hollow vibration-absorbing rod, a mounting plate is fixedly provided inside the hollow vibration-absorbing rod, the battery is fixedly installed on the side of the mounting plate, a mounting frame is fixedly provided on the side of the mounting plate, the photoelectric detector and the roughness detection light source are both fixedly installed on the mounting frame, and a transparent window is provided on the outer wall of the hollow vibration-absorbing rod at a position corresponding to the position of the photoelectric detector and the roughness detection light source.

[0007] In the above-mentioned air-conditioning sheet metal inner hole grinding device, the vibration-absorbing mechanism includes a vibration-absorbing circular shell fixedly arranged on the upper end of the elastic telescopic rod, a vibration-absorbing circular shell is slidably arranged at the inner center of the vibration-absorbing circular shell, and a plurality of evenly distributed vibration-absorbing telescopic mechanisms are arranged between the side wall of the vibration-absorbing circular ring and the inner wall of the vibration-absorbing circular shell, and a lever is fixedly arranged on the side wall of the vibration-absorbing circular ring and between two adjacent vibration-absorbing telescopic mechanisms.

[0008] In the above-mentioned air-conditioning sheet metal inner hole grinding device, the vibration-absorbing telescopic mechanism includes a vibration-absorbing sleeve and a vibration-absorbing push rod, the vibration-absorbing sleeve is fixedly connected to the inner wall of the vibration-absorbing circular shell, one end of the vibration-absorbing push rod is plugged into the vibration-absorbing sleeve, and the other end of the vibration-absorbing push rod is contacted with the side wall of the vibration-absorbing ring, the interior of the vibration-absorbing sleeve is slidably provided with a vibration-absorbing piston fixedly connected to one end of the vibration-absorbing push rod, the interior of the vibration-absorbing sleeve is also slidably provided with a permanent magnet block, a vibration-absorbing spring is fixedly provided between the vibration-absorbing piston and the permanent magnet block, and the inner wall of the vibration-absorbing sleeve is fixedly provided with an electromagnetic block corresponding to the position of the permanent magnet block.

[0009] In the above-mentioned air-conditioning sheet metal inner hole grinding device, the wear detection mechanism includes a photoelectric switch and a wear detection light source, a wear detection support is fixedly provided on the top of the base and on one side of the rotating shaft, the photoelectric switch and the wear detection light source are fixedly installed inside the wear detection support in a vertically symmetrical manner, a wear detection hole is opened on the surface of the rotating disk at a position corresponding to the position of the photoelectric switch and the wear detection light source, and a pulse counter is fixedly installed on the inner side wall of the wear detection support.

[0010] In the above-mentioned air-conditioning sheet metal inner hole grinding device, the positioning mechanism includes a positioning cylinder and a positioning clamping plate. A positioning support is fixedly provided on the top of the base and on one side of the rotating shaft. The positioning cylinder is fixedly installed inside the positioning support in an up-and-down symmetrical manner. The positioning clamping plate is fixedly installed on the movable end of the positioning cylinder. The positioning clamping plate clamps the rotating disk and fixes it.

[0011] In the above-mentioned air-conditioning sheet metal inner hole grinding device, the cooling mechanism includes a cooling rod which is laterally fixedly installed inside the bracket holder and the bracket clamping plate. The inside of the bracket holder and the inside of the bracket clamping plate, and an annular cooling liquid cavity is provided at the periphery of the retreat hole. The cold end of the cooling rod is inserted into the inside of the cooling liquid annular cavity, and the heat-conducting end of the cooling rod extends to the outside. The top of the bracket holder and the bottom of the bracket clamping plate are both provided with annular cooling plates.

[0012] In the above-mentioned air-conditioning sheet metal inner hole grinding device, the trigger switch mechanism includes a switch contact head and a control switch, the switch contact head is fixedly installed on the bottom of the vibration-absorbing circular shell, and the control switch is fixedly installed on the elastic telescopic rod, and the switch contact head and the control switch are correspondingly distributed in the upper and lower positions.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. Through the inner hole roughness detection mechanism, the roughness of the inner hole surface of the compressor bracket can be pre-detected, and then the power of the grinding motor can be controlled by the PLC controller through the detected electrical signal, which can effectively avoid energy waste and unnecessary damage to the equipment caused by excessive grinding motor power; on the contrary, if the power is too low, the expected grinding effect cannot be achieved, affecting the processing efficiency.

[0014] 2. Through the vibration reduction mechanism, the vibration amplitude generated by the grinding motor when driving the grinding rod to rotate will be effectively processed by the vibration reduction mechanism. The vibration reduction mechanism can reduce the resonance amplitude between the vibration reduction rod and the grinding rod, so as to better suppress the vibration and make the grinding process more stable and reliable. This is very important to avoid excessive grinding of the inner hole of the bracket, which greatly improves the grinding accuracy. At the same time, the inner hole roughness detection mechanism can also detect the roughness change of the inner hole surface in real time. As the grinding progresses, the roughness of the inner hole surface will gradually decrease. At this time, the system can adjust the vibration reduction force of the vibration reduction mechanism as needed according to the real-time detection data, which can not only further reduce unnecessary energy consumption and reduce the equipment operation load, but also ensure the processing accuracy. This intelligent control process not only significantly improves the grinding accuracy, but also minimizes the energy loss. In the long-term production process, the accumulation of this energy-saving effect can significantly reduce the production cost and bring considerable economic benefits to the enterprise.

[0015] 3. By setting the clamping cylinder and the bracket clamping plate, two adjacent compressor brackets can be stacked and clamped up and down, so that during the grinding operation, the inner holes of the adjacent compressor brackets can be ground at the same time, which greatly improves the efficiency of the grinding process and further improves the capacity and benefits of the entire production process.

[0016] 4. Through the wear detection mechanism set up, the grinding rod will produce wear during the grinding process. By measuring the number of rotations of the grinding rod at different power levels, the wear degree of the grinding rod can be accurately reflected, and personnel can be reminded to replace the grinding rod in time to improve the efficiency of grinding. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of an air conditioner sheet metal inner hole grinding device provided by the present invention; Figure 2 It is a schematic diagram of a partially cutaway structure of an air conditioner sheet metal inner hole grinding device provided by the present invention; Figure 3 It is a schematic diagram of the internal structure of a grinding rod of an air conditioner sheet metal inner hole grinding device provided by the present invention; Figure 4It is a structural schematic diagram of the connection between a vibration-absorbing circular shell and a vibration-absorbing circular ring of an air-conditioning sheet metal inner hole grinding device provided by the present invention; Figure 5 The invention provides an air conditioner sheet metal inner hole grinding device. Figure 4 Structural schematic diagram of the middle vibration-absorbing telescopic mechanism; Figure 6 The invention provides an air conditioner sheet metal inner hole grinding device. Figure 4 A three-dimensional diagram of the middle vibration-absorbing circular shell and the vibration-absorbing circular ring; Figure 7 It is a structural schematic diagram of a wear detection mechanism and a positioning mechanism of an air conditioner sheet metal inner hole grinding device provided by the present invention; Figure 8 It is a front structural schematic diagram of a bracket support of an air conditioner sheet metal inner hole grinding device provided by the present invention; Fig. 9 It is a schematic diagram of the cutaway structure of a bracket support of an air conditioner sheet metal inner hole grinding device provided by the present invention; Fig.10 It is a structural schematic diagram of a trigger switch mechanism of an air conditioner sheet metal inner hole grinding device provided by the present invention; Fig.11 It is a structural schematic diagram of an air-conditioning sheet metal inner hole grinding device provided by the present invention, in which two compressor brackets are clamped between a bracket support and a bracket clamping plate.

[0018] In the figure: 1 base, 2 workbench, 3 frame, 4 PLC controller, 5 grinding cylinder, 6 grinding motor, 7 grinding rod, 8 bracket bracket, 9 clamping frame, 10 clamping cylinder, 11 bracket clamping plate, 12 hollow vibration damping rod, 13 inner hole roughness detection mechanism, 131 battery, 132 photoelectric detector, 133 roughness detection light source, 14 elastic telescopic rod, 15 rotating shaft, 16 rotating disk, 17 vibration damping mechanism, 171 vibration damping round shell, 172 vibration damping ring, 173 vibration damping telescopic mechanism, 1731 vibration damping sleeve, 1732 vibration damping top rod, 1733 vibration damping movable Plug, 1734 permanent magnet block, 1735 vibration-absorbing spring, 1736 electromagnetic block, 174 lever, 18 wear detection mechanism, 181 photoelectric switch, 182 wear detection light source, 183 pulse counter, 184 wear detection support, 185 wear detection hole, 19 positioning mechanism, 191 positioning cylinder, 192 positioning splint, 193 positioning support, 20 cooling mechanism, 201 cooling rod, 202 annular cold guide plate, 21 trigger switch mechanism, 211 switch contact head, 212 control switch, 22 mounting plate, 23 mounting frame, 24 transparent window. Implementation

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] like Figure 1-Figure 11 As shown, an air conditioner sheet metal inner hole grinding device includes a base 1 and a workbench 2 and a frame 3 arranged above the base 1, the workbench 2 is fixedly arranged on the top of the base 1, the frame 3 is fixedly arranged on the upper surface of the workbench 2, a PLC controller 4 is fixedly installed on the side wall of the frame 3, a grinding cylinder 5 is fixedly installed on the top of the frame 3, a grinding motor 6 is fixedly installed on the moving end of the grinding cylinder 5, and a grinding rod 7 is fixedly installed on the output end of the grinding motor 6, and also includes: The support bracket 8 is fixedly connected to the upper surface of the workbench 2. A clamping frame 9 is symmetrically fixedly provided on the upper surface of the workbench 2. A clamping cylinder 10 is fixedly installed on the top of the clamping frame 9. A support clamping plate 11 is fixedly provided on the movable end of the clamping cylinder 10. The hollow vibration-absorbing rod 12 is fixedly connected to the lower end of the grinding rod 7. An inner hole roughness detection mechanism 13 is provided inside the hollow vibration-absorbing rod 12, and the inner hole roughness detection mechanism 13 can detect the roughness of the inner hole and control the grinding motor 6 to work through the PLC controller 4. The inner hole roughness detection mechanism 13 includes a battery 131, a photodetector 132 and a roughness detection light source 133 arranged inside the hollow vibration-absorbing rod 12. A mounting plate 22 is fixedly provided inside the hollow vibration-absorbing rod 12. The battery 131 is fixedly installed on the side of the mounting plate 22. The side of the mounting plate 22 is fixedly provided with a mounting plate 23. The mounting frame 23, the photoelectric detector 132 and the roughness detection light source 133 are fixedly mounted on the mounting frame 23, the battery 131 can provide power support for the photoelectric detector 132 and the roughness detection light source 133, and a transparent window 24 is provided on the outer wall of the hollow vibration-absorbing rod 12 at a position corresponding to the position of the photoelectric detector 132 and the roughness detection light source 133. After the roughness detection light source 133 is powered on, it will shine on the inner hole through the transparent window 24 and shine on the photoelectric detector 132 through scattered light. At this time, the photoelectric detector 132 will feed back the detected electrical signal to the PLC controller 4.

[0021] The elastic telescopic rod 14 (the elastic telescopic rod 14 is composed of a telescopic sleeve, a movable rod, a telescopic slider and a telescopic spring, and the side wall of the telescopic slider is provided with a rubber damping sleeve in contact with the inner wall of the telescopic sleeve, which can reduce the vibration of the telescopic spring during rebound and reduce the influence of the self-vibration of the telescopic spring), the surface of the bracket holder 8, the surface of the workbench 2 and the surface of the bracket clamping plate 11 are all provided with corresponding retreat holes, the elastic telescopic rod 14 is arranged inside the retreat hole, the lower end of the elastic telescopic rod 14 is fixedly provided with a rotating shaft 15, and the lower end of the rotating shaft 15 is rotatably connected to the top of the base 1, and the shaft wall of the rotating shaft 15 is fixedly provided with a rotating disk 16.

[0022] The vibration-absorbing mechanism 17 is fixedly connected to the upper end of the elastic telescopic rod 14, and the vibration-absorbing mechanism 17 is used in conjunction with the lower end of the hollow vibration-absorbing rod 12. The vibration-absorbing mechanism 17 includes a vibration-absorbing circular shell 171 fixedly arranged on the upper end of the elastic telescopic rod 14, a vibration-absorbing circular ring 172 is slidably arranged at the inner center of the vibration-absorbing circular shell 171, and a plurality of evenly distributed vibration-absorbing telescopic mechanisms 173 are arranged between the side wall of the vibration-absorbing circular ring 172 and the inner wall of the vibration-absorbing circular shell 171, and a lever 17 is fixedly arranged on the side wall of the vibration-absorbing circular ring 172 and between two adjacent vibration-absorbing telescopic mechanisms 173. 4. The vibration-absorbing telescopic mechanism 173 includes a vibration-absorbing sleeve 1731 and a vibration-absorbing push rod 1732. The vibration-absorbing sleeve 1731 is fixedly connected to the inner side wall of the vibration-absorbing circular shell 171. One end of the vibration-absorbing push rod 1732 is plugged into the vibration-absorbing sleeve 1731, and the other end of the vibration-absorbing push rod 1732 is in contact with the side wall of the vibration-absorbing circular ring 172. A vibration-absorbing piston 1733 fixedly connected to one end of the vibration-absorbing push rod 1732 is slidably provided inside the vibration-absorbing sleeve 1731. A permanent magnet block 1734 is also slidably provided inside the vibration-absorbing sleeve 1731. The vibration-absorbing piston 173 A vibration-absorbing spring 1735 is fixedly arranged between the vibration-absorbing sleeve 1731 and the permanent magnet block 1734, and an electromagnetic block 1736 corresponding to the position of the permanent magnet block 1734 is fixedly arranged on the inner wall of the vibration-absorbing sleeve 1731 (a damping rubber sleeve is arranged on the outer wall of the vibration-absorbing piston 1733 and is in contact with the inner wall of the vibration-absorbing cylinder, which can reduce the vibration of the vibration-absorbing spring 1735 when it rebounds, and reduce the influence of the vibration of the vibration-absorbing spring 1735 on the vibration-absorbing push rod 1732 and the grinding rod 7), the hollow vibration-absorbing rod 12 and the grinding rod 7 rotate synchronously, and the hollow vibration-absorbing rod 12 can drive the vibration-absorbing ring 1 72 rotates, the vibration-absorbing ring 172 can drive the vibration-absorbing shell 171 to rotate, and the grinding rod 7 will vibrate due to the rotation. At this time, the vibration of the grinding rod 7 is transmitted to the hollow vibration-absorbing rod 12, and the hollow vibration-absorbing rod 12 will drive the vibration-absorbing ring 172 to move inside the vibration-absorbing shell 171, so that the vibration-absorbing ring 172 squeezes the vibration-absorbing top rod 1732 around, so that the vibration-absorbing top rod 1732 moves inside the vibration-absorbing sleeve 1731 and overcomes the external force of the vibration-absorbing spring 1735 through the vibration-absorbing piston 1733, thereby being able to offset the resonant impact force of the hollow vibration-absorbing rod 12.

[0023] The wear detection mechanism 18 is arranged between the shaft wall of the rotating shaft 15 and the top of the base 1, and is used to detect the wear degree of the grinding rod 7. The wear detection mechanism 18 includes a photoelectric switch 181 and a wear detection light source 182. A wear detection support 184 is fixedly provided on the top of the base 1 and located on one side of the rotating shaft 15. The photoelectric switch 181 and the wear detection light source 182 are fixedly installed inside the wear detection support 184 in a vertically symmetrical manner. The surface of the rotating disk 16 corresponds to the position of the photoelectric switch 181 and the wear detection light source 182. A wear detection hole 185 is opened, and a pulse counter 183 is fixedly installed on the inner wall of the wear detection support 184. The wear detection hole 185 passes through the photoelectric switch 181 and the wear detection light source 182 once, and the light emitted by the wear detection light source 182 will pass through the wear detection hole 185 to the photosensitive end of the photoelectric switch 181. At this time, the photoelectric switch 181 can receive the light beam signal of the wear detection light source 182 once, and convert the light signal into an electrical signal, and then send the electrical signal to the pulse counter 183.

[0024] The positioning mechanism 19 is arranged between the shaft wall of the rotating shaft 15 and the top of the base 1, and is used to position and fix the rotating shaft 15. The positioning mechanism 19 includes a positioning cylinder 191 and a positioning clamping plate 192. A positioning support 193 is fixedly provided on the top of the base 1 and on one side of the rotating shaft 15. The positioning cylinder 191 is fixedly installed inside the positioning support 193 in an up-down symmetrical manner. The positioning clamping plate 192 is fixedly installed on the moving end of the positioning cylinder 191. The positioning clamping plate 192 clamps and fixes the rotating disk 16. The positioning cylinder 191 drives the positioning clamping plate 192 to move and clamp and fix the rotating disk 16, so that the positions of the elastic telescopic rod 14 and the rotating shaft 15 are fixed.

[0025] The cooling mechanism 20 is arranged inside the bracket support 8 and inside the bracket clamping plate 11, and is located outside the retreat hole. The cooling mechanism 20 includes a refrigeration rod 201 which is fixedly installed in the bracket support 8 and inside the bracket clamping plate 11 in a transverse manner. The bracket support 8 and the bracket clamping plate 11 are provided with a coolant annular cavity, and the cold end of the refrigeration rod 201 is inserted into the coolant annular cavity, and the heat conducting end of the refrigeration rod 201 extends to the outside. The top of the bracket support 8 and the bottom of the bracket clamping plate 11 are both provided with an annular cold conducting plate 202. When the refrigeration rod 201 is subjected to the action of electric current, the cold end of the refrigeration rod 201 can conduct the heat in the coolant to the hot end to the outside, thereby realizing the cooling of the refrigerant. During the cooling process, the coolant will transfer the cold to the annular cold conducting plate 202. Since the annular cold conducting plate 202 is in contact with the inner hole around the compressor bracket, the cold can be transferred to the surrounding material of the inner hole for cooling.

[0026] The trigger switch mechanism 21 is arranged between the elastic telescopic rod 14 and the vibration-absorbing mechanism 17, and is used to control the operation of the grinding motor 6, the inner hole roughness detection mechanism 13 and the cooling mechanism 20. The trigger switch mechanism 21 includes a switch contact head 211 and a control switch 212. The switch contact head 211 is fixedly installed on the bottom of the vibration-absorbing circular shell 171, and the control switch 212 is fixedly installed on the elastic telescopic rod 14, and the switch contact head 211 and the control switch 212 are correspondingly distributed in the upper and lower positions.

[0027] The grinding cylinder 5 , the grinding motor 6 , the clamping cylinder 10 , the inner hole roughness detection mechanism 13 , the wear detection mechanism 18 , the positioning mechanism 19 , the cooling mechanism 20 and the trigger switch mechanism 21 are all connected to the PLC controller 4 via electrical signals.

[0028] The operating principle of the present invention is described as follows: In the actual production process, two compressor brackets can be stacked up and down, the compressor bracket located at the bottom is engaged with the raised portion on the upper surface of the bracket bracket 8, and the compressor bracket located at the top is engaged with the raised portion on the lower surface of the bracket clamping plate 11, so that the heads of the upper and lower compressor brackets are butted and the two adjacent inner holes are aligned (such as Fig.11 ), ensure that the inner hole of the compressor bracket is accurately aligned with the retreat hole on the bracket support 8, and make the inner hole sleeve on the outside of the vibration-absorbing circular shell 171. Then, the operator starts the clamping cylinder 10 by operating the PLC controller 4. When the clamping cylinder 10 is extended, it drives the bracket clamping plate 11 to move downward. Since the shape of the bracket support 8 and the shape of the bracket clamping plate 11 match the internal shape of the compressor bracket, the two compressor brackets can be firmly pressed against the upper surface of the bracket support 8.

[0029] Next, the operator operates the PLC controller 4 again to start the slow extension of the polishing cylinder 5. During this process, the PLC controller 4 controls the opening and closing degree of the speed regulating valve in the air source system, and accurately adjusts the flow of gas to the inside of the polishing cylinder 5, thereby realizing precise control of the extension speed of the polishing cylinder 5. When the polishing cylinder 5 is extended, it drives the polishing motor 6, the polishing rod 7 and the hollow vibration-absorbing rod 12 to move slowly downward. First, the hollow vibration-absorbing rod 12 is passed through the inner holes of the two compressor brackets until the lower end of the hollow vibration-absorbing rod 12 is inserted into the vibration-absorbing ring 172 of the vibration-absorbing shell 171. To ensure the accuracy of this insertion process, A positioning cylinder 191 and a positioning clamp 192 are provided on one side of the rotating shaft 15 and the rotating disk 16. The operator first controls the positioning cylinder 191 by operating the PLC controller 4. When the positioning cylinder 191 is extended, the positioning clamp 192 is driven to move downward to clamp the rotating disk 16, thereby fixing the position of the rotating shaft 15. At this time, the hollow vibration-absorbing rod 12 can be accurately aligned with the vibration-absorbing ring 172 to ensure that the two are accurately plugged in and matched. When grinding operation is required, the positioning cylinder 191 is controlled to retract through the PLC controller 4 to separate the positioning clamp 192 from the rotating disk 16, thereby releasing the position fixation of the rotating shaft 15.

[0030] Subsequently, the hollow vibration-absorbing rod 12 will slowly press the vibration-absorbing circular shell 171 downward and squeeze the compression end of the elastic telescopic rod 14, so that the grinding rod 7 will slowly move to the inside of the adjacent inner hole. Since the side wall of the grinding rod 7 has an inclined surface, it has not yet contacted the surface of the inner hole. During the downward movement of the vibration-absorbing circular shell 171, when the switch contact head 211 at the bottom of the vibration-absorbing circular shell 171 contacts the control switch 212 and triggers the action, the control switch 212 turns on the power of the photoelectric detector 132 and the roughness detection light source 133. At the same time, the control switch 212 outputs an electrical signal to the PLC controller 4, and the PLC controller 4 immediately controls the light The electrical detector 132 and the roughness detection light source 133 start working, and control the grinding cylinder 5 to stop working and control the grinding motor 6 to work at low power. At this time, the grinding motor 6 rotates slowly, driving the grinding rod 7 and the hollow vibration-absorbing rod 12 to rotate slowly, so that the photoelectric detector 132 and the roughness detection light source 133 inside the grinding rod 7 rotate slowly together, and the roughness of the inner hole is pre-detected. This slow rotation can provide a stable light source and detection conditions for the photoelectric detector 132 and the roughness detection light source 133, so that the photoelectric detector 132 can accurately detect the roughness of the inner hole surface while reducing energy loss.

[0031] When the roughness detection light source 133 is powered on and irradiated on two adjacent inner holes, if the roughness of the inner hole is greater, the more uneven positions there are on the surface of the inner hole. These uneven positions will scatter the light, resulting in the light intensity irradiated on the photodetector 132 becoming greater after being scattered by the uneven positions of the inner hole. At this time, the light intensity signal detected by the photodetector 132 increases, and the detected electrical signal is fed back to the PLC controller 4. The PLC controller 4 controls the grinding motor 6 to increase the working power accordingly. This is because the rougher the inner hole, the more uneven positions there are on the surface. During the grinding process, the contact area between the grinding rod 7 and the inner wall of the inner hole needs to be increased, and the friction The resistance will also increase significantly. In order to overcome this greater frictional resistance, the grinding motor 6 needs to drive the grinding rod 7 with a higher power to maintain the required grinding speed and effect. On the contrary, if the surfaces of two adjacent inner holes are relatively smooth and there are fewer uneven positions, less light is scattered by the uneven positions, and the light intensity reflected to the photodetector 132 becomes lower. At this time, the PLC controller 4 controls the grinding motor 6 to operate at low power and makes the grinding rod 7 and the hollow vibration-absorbing rod 12 rotate at a low speed. When rotating at a low speed, the vibration amplitude of the grinding rod 7 and the vibration-absorbing top rod 1732 is small, which can avoid the phenomenon of excessive grinding of the inner hole, improve the accuracy of the inner hole processing, and reduce energy loss.

[0032] However, during the grinding process, the roughness of the inner hole surface is not fixed. With the action of the grinding rod 7, the material on the inner hole surface is continuously removed, and the roughness will gradually decrease. If the grinding motor 6 continues to grind at high power, it will not only cause greater vibration, affecting the grinding accuracy, but also cause energy loss. Therefore, the operator needs to operate the PLC controller 4 again to control the grinding cylinder 5 and the grinding motor 6 to work, and the grinding cylinder 5 continues to move downward so that the grinding cylinder 5 drives the grinding rod 7 to contact the inner hole surface. The grinding motor 6 works to drive the grinding rod 7 and the vibration-absorbing rod to complete the grinding. At this time, the photoelectric detector 132 and the roughness detection light source 133 can detect the roughness of the inner hole surface in real time, and feed back electrical signals to the PLC controller 4, so that the PLC controller 4 can adjust the power of the grinding motor 6 in real time according to the roughness of the inner hole surface to reduce energy loss.

[0033] During the grinding process, the hollow vibration-absorbing rod 12 and the grinding rod 7 rotate synchronously. The hollow vibration-absorbing rod 12 is a square rod, and the interior of the vibration-absorbing ring 172 is a square hole. The two are plugged into a square structure to ensure that the hollow vibration-absorbing rod 12 and the vibration-absorbing ring 172 rotate synchronously. When the vibration-absorbing ring 172 rotates, a lever 174 is provided between the vibration-absorbing ring 172 and the vibration-absorbing sleeve 1731 and the vibration-absorbing top rod 1732. The lever 174 abuts against the vibration-absorbing sleeve 1731 and the vibration-absorbing top rod 1732 during the rotation process. The grinding rod 7 will vibrate when rotating, and the vibration is transmitted to the hollow vibration-absorbing rod 12. The hollow vibration-absorbing rod 12 will drive the vibration-absorbing ring 172 to move inside the vibration-absorbing round shell 171, so that the vibration-absorbing ring 172 squeezes the vibration-absorbing top rod 1732 around, and the vibration-absorbing top rod 1732 moves inside the vibration-absorbing sleeve 1731 and overcomes the external force of the vibration-absorbing spring 1735, thereby offsetting the resonant impact force of the hollow vibration-absorbing rod 12.

[0034] When the roughness of the inner hole of the compressor bracket is detected, after the PLC controller 4 receives the electrical signal fed back by the photodetector 132, it will control the current of the electromagnetic block 1736 according to the roughness of the inner hole. If the roughness of the inner hole is large, the power used by the grinding motor 6 is high, and the vibration amplitude of the grinding rod 7 is large, then the current controlled to the electromagnetic block 1736 will be larger, so that the electromagnetic block 1736 itself will generate a stronger magnetic force, so that the permanent magnet block 1734 can be magnetically pushed to move inside the vibration damping cylinder and squeeze the vibration damping spring 1735, so that the amount of compression of the vibration damping spring 1735 between the vibration damping piston 1733 and the permanent magnet block 1734 increases. The elastic force value of 35 is proportional to the compression amount, so the greater the compression amount of the vibration-absorbing spring 1735, the greater the elastic force value, and at this time, the strength of the vibration-absorbing top rod 1732 to offset the movement of the vibration-absorbing ring 172 is greater, thereby reducing the resonance amplitude of the hollow vibration-absorbing rod 12 and the grinding rod 7, and improving the accuracy of the grinding of the inner hole by the grinding rod 7. By suppressing the vibration, the grinding rod 7 can contact the surface of the inner hole more accurately, achieve more uniform material removal, and improve the accuracy of grinding. As the roughness of the inner hole gradually decreases, the power used by the grinding motor 6 needs to be gradually reduced, and the vibration generated by the grinding rod 7 itself also gradually decreases. At this time, the current controlled to the electromagnetic block 1736 is gradually reduced, and the vibration-absorbing spring The compression amount of the spring 1735 gradually decreases, and the strength of the vibration-absorbing push rod 1732 to offset the vibration-absorbing ring 172 also gradually decreases until the inner hole is polished to standard. During the entire polishing process, the surface roughness of the inner hole is continuously detected to maintain a suitable polishing speed and intensity, avoid excessive polishing, improve processing accuracy, and avoid additional energy waste. Because the polishing process is affected by many factors, such as the degree of wear of the polishing rod 7, changes in polishing pressure, and unevenness of the workpiece material, these factors will cause the change in the roughness of the inner wall of the hole to be uncertain and complex. It is useless to only rely on the initial detection results to set the tightness of the vibration-absorbing spring 1735. It is difficult to adapt to these dynamic changes and to accurately match the needs of the actual grinding process. If the inner hole surface is already relatively smooth and the vibration-damping spring 1735 is still in a tight state, the vibration-damping system will continue to consume energy to resist the vibration that is not strong, which causes a waste of energy. By continuously adjusting the compression of the vibration-damping spring 1735, the energy consumption of the vibration-damping system can be matched with the actual needs, thereby improving the energy utilization efficiency. At the same time, if the vibration-damping spring 1735 is too tight, the movement resistance of the grinding rod 7 will be increased, thereby reducing the grinding speed; if the vibration-damping spring 1735 is too loose, the vibration cannot be effectively suppressed when the roughness is large, which may lead to frequent adjustments and repeated grinding, thereby extending the grinding time.

[0035] During the grinding process, when the switch contact head 211 contacts the control switch 212 and triggers the action, the control switch 212 will also connect the power supply of the cooling rod 201. After the control switch 212 is closed, an electrical signal is output to the PLC controller 4, and the PLC controller 4 immediately controls the cooling rod 201 to start working. When the cooling rod 201 is powered on, under the action of the current, its cold end can transfer the heat in the coolant to the hot end to the outside, thereby cooling the coolant. During the cooling process, the coolant will transfer the cold to the annular cold conduction plate 20 2. Since the upper and lower annular cold conduction plates 202 are in contact with the inner holes of the upper and lower compressor brackets, the cold energy can be transferred to the surrounding materials of the inner hole and cooled, thereby preventing the excessive temperature around the inner hole from affecting the material structure of the compressor bracket (such as the metallographic structure of the material). Since the roughness of the inner hole gradually decreases during the grinding process and the power of the grinding motor 6 gradually decreases, the temperature around the inner hole also gradually decreases. The PLC controller 4 will control the current to the inside of the cooling rod 201 to gradually decrease, thereby reducing energy loss.

[0036] In addition, during the grinding process, the hollow vibration-absorbing rod 12, the vibration-absorbing ring 172, the elastic telescopic rod 14 and the rotating shaft 15 rotate together, so that the rotating disk 16 on the rotating shaft 15 also rotates together. During the rotation of the rotating disk 16, the wear detection hole 185 thereof will move between the photoelectric switch 181 and the wear detection light source 182. Every time the wear detection hole 185 passes between the photoelectric switch 181 and the wear detection light source 182, the light emitted by the wear detection light source 182 will pass through the wear detection hole 185 and irradiate the photosensitive end of the photoelectric switch 181. At this time, the photoelectric switch 181 can receive a light beam signal from the wear detection light source 182 once, and convert the light signal into an electrical signal, and then send the electrical signal to the pulse counter 183. The pulse counter 183 increases a count and displays it on the display screen of the PLC controller 4 (for example, the pulse counter 1 After the count reaches 50,000, a new grinding rod 7 needs to be replaced). Since the inner hole roughness of each compressor bracket is different, before grinding the inner hole, the grinding power of the grinding motor 6 is adjusted based on the inner hole roughness, which will cause the grinding power of the grinding motor 6 for each compressor bracket to be different, so the wear of the grinding rod 7 is also different. By measuring the number of rotations of the grinding rod 7 at different powers, the degree of wear of the grinding rod 7 can be accurately reflected, and the personnel can be reminded to replace the grinding rod 7 in time. Since the grinding rod 7 is provided with a disassembly structure inside, the battery 131, the photoelectric detector 132 and the roughness detection light source 133 can be disassembled and removed from the inside of the grinding rod 7 (the disassembly structure is not specifically shown in the figure). After replacing the new grinding rod 7, the battery 131, the photoelectric detector 132 and the roughness detection light source 133 can be installed inside to avoid cost waste.

[0037] After the grinding is completed, the operator controls the positioning cylinder 191 to extend through the PLC controller 4, and the positioning cylinder 191 drives the positioning clamp 192 to move and clamp the rotating disk 16 to fix the position of the elastic telescopic rod 14 and the rotating shaft 15. Then, the PLC controller 4 controls the grinding cylinder 5 to retract, so that the grinding rod 7 and the hollow vibration-absorbing rod 12 move upward and move out from the inside of the inner hole. In the process of the hollow vibration-absorbing rod 12 moving upward, the elastic telescopic rod 14 applies an upward elastic force to the vibration-absorbing circular shell 171, so that the vibration-absorbing circular shell 171 moves again to the inside of the inner hole and resets. Finally, the operator controls the clamping cylinder 10 to retract through the PLC controller 4, so that the bracket clamping plate 11 moves out from the inside of the compressor bracket, releases the clamping fixation of the compressor bracket, and completes the grinding work.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An air conditioner sheet metal inner hole grinding device, comprising a base (1) and a workbench (2) and a frame (3) arranged above the base (1), wherein the workbench (2) is fixedly arranged on the top of the base (1), the frame (3) is fixedly arranged on the upper surface of the workbench (2), a PLC controller (4) is fixedly installed on the side wall of the frame (3), a grinding cylinder (5) is fixedly installed on the top of the frame (3), a grinding motor (6) is fixedly installed on the moving end of the grinding cylinder (5), and a grinding rod (7) is fixedly installed on the output end of the grinding motor (6), characterized in that: Also includes: A support bracket (8) is fixedly connected to the upper surface of the workbench (2); a clamping frame (9) is symmetrically fixedly provided on the upper surface of the workbench (2); a clamping cylinder (10) is fixedly installed on the top of the clamping frame (9); a support clamping plate (11) is fixedly provided at the movable end of the clamping cylinder (10); a hollow vibration-absorbing rod (12) is fixedly connected to the lower end of the grinding rod (7); an inner hole roughness detection mechanism (13) is provided inside the hollow vibration-absorbing rod (12), and the inner hole roughness detection mechanism (13) is capable of detecting the roughness of the inner hole. The operation of the grinding motor (6) is detected and controlled by a PLC controller (4); an elastic telescopic rod (14); the surface of the support bracket (8), the surface of the workbench (2) and the surface of the support clamping plate (11) are all provided with corresponding retreat holes, the elastic telescopic rod (14) is arranged inside the retreat hole, a rotating shaft (15) is fixedly provided at the lower end of the elastic telescopic rod (14), and the lower end of the rotating shaft (15) is rotatably connected to the top of the base (1), and a rotating disk (16) is fixedly provided on the shaft wall of the rotating shaft (15); a vibration elimination mechanism (1 7), fixedly connected to the upper end of the elastic telescopic rod (14), and the vibration absorbing mechanism (17) is used in conjunction with the lower end of the hollow vibration absorbing rod (12); a wear detection mechanism (18), arranged between the shaft wall of the rotating shaft (15) and the top of the base (1), for detecting the wear degree of the grinding rod (7); a positioning mechanism (19), arranged between the shaft wall of the rotating shaft (15) and the top of the base (1), for positioning and fixing the rotating shaft (15); a cooling mechanism (20), arranged inside the bracket bracket (8) and the bracket clamping plate (1 1) and is located on the periphery of the concession hole; a trigger switch mechanism (21) is arranged between the elastic telescopic rod (14) and the vibration elimination mechanism (17) and is used to control the operation of the grinding motor (6), the inner hole roughness detection mechanism (13) and the cooling mechanism (20); the grinding cylinder (5), the grinding motor (6), the clamping cylinder (10), the inner hole roughness detection mechanism (13), the wear detection mechanism (18), the positioning mechanism (19), the cooling mechanism (20) and the trigger switch mechanism (21) are all connected to the PLC controller (4) via electrical signals.

2. The air conditioner sheet metal inner hole grinding device according to claim 1, characterized in that: The inner hole roughness detection mechanism (13) comprises a battery (131), a photoelectric detector (132) and a roughness detection light source (133) arranged inside the hollow vibration-absorbing rod (12); a mounting plate (22) is fixedly provided inside the hollow vibration-absorbing rod (12); the battery (131) is fixedly installed on the side of the mounting plate (22); a mounting frame (23) is fixedly provided on the side of the mounting plate (22); the photoelectric detector (132) and the roughness detection light source (133) are both fixedly installed on the mounting frame (23); and a transparent window (24) is provided on the outer wall of the hollow vibration-absorbing rod (12) at a position corresponding to the position of the photoelectric detector (132) and the roughness detection light source (133).

3. The air conditioner sheet metal inner hole grinding device according to claim 1, characterized in that: The vibration-absorbing mechanism (17) comprises a vibration-absorbing circular shell (171) fixedly arranged at the upper end of the elastic telescopic rod (14); a vibration-absorbing circular ring (172) is slidably arranged at the inner center of the vibration-absorbing circular shell (171); a plurality of vibration-absorbing telescopic mechanisms (173) are evenly distributed between the side wall of the vibration-absorbing circular ring (172) and the inner wall of the vibration-absorbing circular shell (171); and a lever (174) is fixedly arranged on the side wall of the vibration-absorbing circular ring (172) (172) and between two adjacent vibration-absorbing telescopic mechanisms (173).

4. The air conditioner sheet metal inner hole grinding device according to claim 3, characterized in that: The vibration-absorbing telescopic mechanism (173) comprises a vibration-absorbing sleeve (1731) and a vibration-absorbing top rod (1732); the vibration-absorbing sleeve (1731) is fixedly connected to the inner side wall of the vibration-absorbing circular shell (171); one end of the vibration-absorbing top rod (1732) is plugged into and matched with the vibration-absorbing sleeve (1731); and the other end of the vibration-absorbing top rod (1732) is arranged in contact with the side wall of the vibration-absorbing circular ring (172); the interior of the vibration-absorbing sleeve (1731) is A vibration-absorbing piston (1733) fixedly connected to one end of a vibration-absorbing top rod (1732) is slidably provided, a permanent magnet block (1734) is also slidably provided inside the vibration-absorbing sleeve (1731), a vibration-absorbing spring (1735) is fixedly provided between the vibration-absorbing piston (1733) and the permanent magnet block (1734), and an electromagnetic block (1736) corresponding to the position of the permanent magnet block (1734) is fixedly provided on the inner side wall of the vibration-absorbing sleeve (1731).

5. The air conditioner sheet metal inner hole grinding device according to claim 1, characterized in that: The wear detection mechanism (18) comprises a photoelectric switch (181) and a wear detection light source (182); a wear detection support (184) is fixedly provided on the top of the base (1) and located on one side of the rotating shaft (15); the photoelectric switch (181) and the wear detection light source (182) are fixedly installed inside the wear detection support (184) in a vertically symmetrical manner; a wear detection hole (185) is provided on the surface of the rotating disk (16) at a position corresponding to the position of the photoelectric switch (181) and the wear detection light source (182); and a pulse counter (183) is fixedly installed on the inner side wall of the wear detection support (184).

6. The air conditioner sheet metal inner hole grinding device according to claim 1, characterized in that: The positioning mechanism (19) comprises a positioning cylinder (191) and a positioning clamping plate (192); a positioning support (193) is fixedly provided at the top of the base (1) and located on one side of the rotating shaft (15); the positioning cylinder (191) is fixedly installed inside the positioning support (193) in a vertically symmetrical manner; the positioning clamping plate (192) is fixedly installed on the moving end of the positioning cylinder (191); and the positioning clamping plate (192) clamps and fixes the rotating disk (16).

7. The air conditioner sheet metal inner hole grinding device according to claim 1, characterized in that: The cooling mechanism (20) comprises a cooling rod (201) which is laterally fixedly installed inside the bracket support (8) and inside the bracket clamping plate (11); an annular cooling liquid cavity is provided inside the bracket support (8) and inside the bracket clamping plate (11) and outside the retreat hole; the cold end of the cooling rod (201) is inserted into the cooling liquid annular cavity, and the heat-conducting end of the cooling rod (201) extends to the outside; and an annular cooling plate (202) is provided at the top of the bracket support (8) and the bottom of the bracket clamping plate (11).

8. The air conditioner sheet metal inner hole grinding device according to claim 3, characterized in that: The trigger switch mechanism (21) comprises a switch contact head (211) and a control switch (212); the switch contact head (211) is fixedly mounted on the bottom of the vibration-absorbing circular shell (171); the control switch (212) is fixedly mounted on the elastic telescopic rod (14); and the switch contact head (211) and the control switch (212) are arranged in a corresponding upper and lower distribution.

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